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Key characteristics

Family: Lamiaceae
Height: 16 to 22 inches
Width: 16 to 22 inches
Flower color: Bright yellow
Foliage color: Green, fragrant
Bloom time: Early summer through fall
Light: Full sun
Water: Low; drought-tolerant once established
Maintenance: Easy; prefers well-drained soil
Growing zone: USDA Zones 7a to 10b
Wildlife: Attracts bees and hummingbirds

Perennials

Agastache mexicana 'Balsumlem'

Summerlong Lemon Mexican Giant Hyssop

Agastache mexicana 'Balsumlem' is a long-blooming perennial that produces dense spikes of soft yellow flowers from early summer through fall. The tubular blossoms emerge in pale lemon tones, contrasting against the plant's deep green, aromatic foliage. This variety is highly attractive to pollinators, drawing in bees, butterflies, and hummingbirds throughout the growing season.

The foliage releases a refreshing citrusy-mint fragrance when touched, adding another layer of interest to the plant.

Light

Full sun

Water

Low; drought-tolerant once established

Bloom time

Early summer through fall

Find this plant

Works well in

Borders
Sun Gardens
Pollinator Gardens
Hummingbird Gardens
Waterwise Gardens

Companion plants

Sedums · Peonies · Coneflowers · Salvias · Shasta daisies · Asters

Design tip

Fall bloom is its strength, and it earns a place near a path or seating area used late in the year. Give it open sun and room to fill out, and repeat it in threes or fives so the planting reads as one sweep instead of scattered dots.

Printable plant sheet (PDF)